[Elecraft] RFC1 and RFC2 on KSB2
W3FPR - Don Wilhelm
w3fpr at earthlink.net
Sat Jan 22 12:19:35 EST 2005
Bart,
You must have had the R-Paks tilted in toward the crystals a bit rather than
vertical. I just checked 2 KSB2s that I just built and there is enough
space to slide a business card thickness easily between either the crystal
and the RF Choke or on the R-Pak side. I really can't imagine why you
scraped the wire on the smooth crystal body (or on the R-Pak either), but I
don't doubt your findings.
73,
Don W3FPR
----- Original Message -----
Subject: [Elecraft] RFC1 and RFC2 on KSB2
> Maybe it's just me, but I found RFC1 and RFC2 on the KSB2 to be very tight
> fits. They are both quite stuck between the crystal and resistor pack.
> That would normally not be a problem, but allthough the manual says to
> 'try to avoid scrapping the wire', one of my RFC's apparently did not come
> through unscraped. After mounting and checking for continuity, I had the
> good sense to check for a short to the crystal can and Bingo! Shorted!
>
> I might have made some more room, if the manual had warned that the
> crystal and the resistor pack should have been soldered as far away from
> eachother as possible. I'm not sure, as this is my first KSB2. I'd rather
> not start messing with them now they are already in there.
>
> If it's just me, no problem, it's fixed.
> If it is more common, maybe it would be a good idea to have the manual
> check for shorts between the RFC and the crystal. I'm not sure how long it
> would have taken me to find this one if I hadn't done it right away. From
> the schematic I'd say it would have introduced some weird filter switching
> problems....
>
>
> Bart de PA3GYU.
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